All official Errata is in use.
Core Rulebook, p.84
You gain a +1 dodge bonus to your Reflex Defense.
A situation that makes you lose your Dexterity bonus to Reflex Defense (if any) also makes you lose dodge bonuses. Also, dodge bonuses stack with each other, unlike most other types of bonuses.
As there are no core rules for such, when a thrown weapon or area attack misses, scatter dice will be rolled to determine where the result lands. The macro is programmed in to determine a random cardinal direction and up to 8 spaces distant from the initial target area.